S- and P-wave neutron spectroscopy Part Xd: Intermediate structure, particle-vibration states

Divadeenam, M.; Beres, William P.; Newson, H.W.

doi:10.1016/0003-4916(73)90105-x

Cited by 11 publications

(1 citation statement)

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“…In both 206Pb (Farrell et al 1965) and 207Pb (Newson 1972;Divadeenam et al 1973) the total integrated neutron strength below 1 MeV was found to be nearly equal to that found in the single doorway state in 208Pb + n. The plots of cumulative neutron strength versus neutron energy showed typical 'integral' -shaped behaviour, which indicated a considerable increase in the· spreading width of the doorway state the further one moved away from the closed shell configuration. A preliminary analysis of poorly resolved data (obtained by F. T. Seibert and others), extending to ~600 keY bombarding energy in 209Bi+n, has never been published, although a plot of the cumulative neutron strength versus neutron energy based on these data was presented by Divadeenam et at.…”

Section: Introductionmentioning

confidence: 78%

Neutron Resonance Spectroscopy on 209Bi

Musgrove¹,

Ja²

1978

Aust. J. Phys.

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The neutron transmission through 209Bi was measured with high resolution at both the 80 and 200 m stations of the Oak Ridge Electron Linear Accelerator. Resonance parameters for s-wave levels below 270 keY and for p-wave levels below 100 keY bombarding energy were obtained.Approximately 25 % of the expected neutron strength of a particle-vibrator doorway was identified in the energy range analysed for s-wave resonances. The average s-wave level spacing is s = 4·5 ± 0·6 ke V after correcting for missed levels. The s-and p-wave neutron strength functions are respectively: 10 4 So = 0·65 ± 0·15 (E < 170 keY); 10 4 Sl = o· 25 ± 0·07 (E < 60 keY).Both strength functions show evidence of energy-dependent structure.

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Section: Introductionmentioning

confidence: 78%